{"product_id":"skf-31581-engine-crankshaft-seal","title":"SKF 31581 Engine Crankshaft Seal - Rear","description":"\u003ch2\u003eOverview of the SKF Crankshaft Rear Seal - Rear 31581\u003c\/h2\u003e\u003cp\u003eThe SKF Crankshaft Rear Seal - Rear 31581 is engineered to provide reliable sealing performance for select Nissan, Toyota, and Volvo vehicles. Designed with precision dimensions and a silicone sealing surface, this crankshaft rear seal helps maintain engine integrity by preventing oil leaks at the rear of the crankshaft.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eWidth: 0.394 inches for optimal fit and sealing\u003c\/li\u003e\n\u003cli\u003eOutside Diameter: 3.944 inches ensuring proper housing compatibility\u003c\/li\u003e\n\u003cli\u003eShaft Diameter: 3.150 inches matching specific crankshaft sizes\u003c\/li\u003e\n\u003cli\u003eSealing Surface Type: Silicone for enhanced durability and resistance\u003c\/li\u003e\n\u003cli\u003eCompatible with Nissan 4Runner, 240SX, Altima; Toyota Pickup; Volvo 760 and 780 models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis SKF crankshaft rear seal, part number 31581, is designed to fit the rear of the engine crankshaft, providing a critical barrier against oil leakage. The silicone sealing surface offers improved resistance to heat and wear compared to traditional materials, which helps extend the service life of the seal. With a width of 0.394 inches and an outside diameter of 3.944 inches, this seal fits precisely into the crankshaft housing, while the 3.150-inch shaft diameter ensures a tight seal around the crankshaft itself.\u003c\/p\u003e\u003cp\u003eThe Crankshaft Rear Seal - Rear product line from SKF focuses on delivering reliable sealing solutions specifically for the rear crankshaft area, where oil leaks can cause significant engine issues. This product line is engineered to meet OEM specifications for a range of vehicles, including Nissan, Toyota, and Volvo models, ensuring compatibility and performance.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents oil leaks at the rear crankshaft seal area\u003c\/li\u003e\n\u003cli\u003eReduces risk of engine oil contamination and loss\u003c\/li\u003e\n\u003cli\u003eHelps maintain proper engine oil pressure\u003c\/li\u003e\n\u003cli\u003ePrevents dirt and debris ingress into the engine\u003c\/li\u003e\n\u003cli\u003eAddresses wear-related seal failures in Nissan 4Runner, Toyota Pickup, and Volvo 760 engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the crankshaft and housing surfaces are clean and free of debris before installation\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools to avoid damaging the silicone sealing surface during installation\u003c\/li\u003e\n\u003cli\u003eVerify the seal orientation matches OEM specifications for rear crankshaft seals\u003c\/li\u003e\n\u003cli\u003eCheck shaft diameter and housing bore to confirm compatibility with part number 31581\u003c\/li\u003e\n\u003cli\u003eApply a light coat of engine oil to the seal lip before installation to aid in proper seating\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eSKF manufactures the Crankshaft Rear Seal - Rear 31581 to meet strict quality standards, ensuring durability and reliable performance in demanding engine environments. While specific warranty details are not provided, SKF products typically adhere to industry standards for material and workmanship quality, supporting long-term engine protection when installed correctly.\u003c\/p\u003e","brand":"SKF","offers":[{"title":"Default Title","offer_id":43744381993141,"sku":"BCNB-31581","price":22.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/CR_31581_Top.jpg?v=1774993963","url":"https:\/\/www.partcatalog.com\/products\/skf-31581-engine-crankshaft-seal","provider":"PartCatalog","version":"1.0","type":"link"}